System and method for verificating electric document and system for providing electric document service

Abstract

A method and system for verifying an electronic document and a system for providing an electronic document service are provided. The system for verifying the electronic document includes: an image data acquisition unit acquiring an image of the electronic document by scanning the electronic document; a barcode detection unit detecting a barcode inserted into a predetermined position in the acquired image of the electronic document and acquiring first electronic document data; an image data conversion unit generating second electronic document data by converting a format of the acquired image of the electronic document into a format that can be compared with the first electronic document data; a falsification determination unit de termining whether the electronic document is falsified by comparing the first electronic document data with the second electronic document data; and a display unit displaying the fa sification determination result determined by the falsification determination unit. Accordingly, it is possible to automatically verify whether the electronic document is falsified by comparing the first document information obtained by scanning the electronic document that is issued on-line and output with the second document information recovered from the barcode included in the electronic document.

1 . A system for verifying an electronic document, the system comprising:
 an image data acquisition unit acquiring an image of the electronic document by scanning the electronic document;   a barcode detection unit detecting a barcode inserted into a predetermined position in the acquired image of the electronic document and acquiring first electronic document data;   an image data conversion unit generating second electronic document data by converting a format of the acquired image of the electronic document into that of the acquired image that can be compared with the first electronic document data;   a falsification determination unit determining whether the electronic document is falsified by comparing the first electronic document data with the second electronic document data; and   a display unit displaying the falsification determination result determined by the falsification determination unit.   
   
   
       2 . The system of  claim 1 , further comprising:
 a communication network interface unit providing a communication network interface function so as to interact with an electronic document issuing system through a communication network; and   a control unit transmitting information on the falsification determination result to the electronic document issuing system based on the falsification determination result.   
   
   
       3 . The system of  claim 2 , wherein when it is determined that the electronic document is falsified, the control unit transmits a report message for reporting that the electronic document is falsified to the electronic document issuing system. 
   
   
       4 . The system of  claim 2 , wherein the control unit that provides a report button on the display unit transmits a report message to the electronic document issuing system, when the report button is pressed by a checker. 
   
   
       5 . The system of  claim 2 , wherein the control unit transmits a receipt verification message for representing that the electronic document is normally received to the electronic document issuing system, when it is determined that the electronic document is not falsified. 
   
   
       6 . The system of  claim 2 , wherein the control unit recognizes the electronic document issuing system from predetermined information or the barcode. 
   
   
       7 . The system of  claim 1 , wherein the barcode is a 2D barcode obtained by encrypting information that includes contents of the electronic document. 
   
   
       8 . The system of  claim 1 , wherein the image data conversion unit that includes an OCR (optical character recognition) processor generates the second electronic document data by converting the acquired image of the electronic document into text information that can be compared with the first electronic document data. 
   
   
       9 . The system of  claim 8 , wherein the falsification determination unit compares main texts of the first and second electronic document data. 
   
   
       10 . The system of  claim 1 , wherein the image data conversion unit generates the second electronic document data by converting a scale and resolution of the acquired image of the electronic document into those of the image that can be compared with the first electronic document data. 
   
   
       11 . The system of  claim 10 , wherein the falsification determination unit compares the first and second electronic document data by recognizing block images including main texts in the first and second electronic document data, recognizing images of parts including text lines in the block images, extracting character images from the recognized images, and overlapping the character images. 
   
   
       12 . A method of verifying an electronic document, the method comprising:
 acquiring an image of the electronic document by scanning the electronic document;   detecting a barcode inserted into a predetermined position in the acquired image of the electronic document;   acquiring first electronic document data by decrypting the detected bar code;   generating second electronic document data by converting a format of the acquired image of the electronic document into a format o the acquired image that can be compared with the first electronic document data;   determining whether the electronic document is falsified by comparing the first electronic document data with the second electronic document data; and   displaying the falsification determination result determined by the falsification determination unit.   
   
   
       13 . The method of  claim 12 , further comprising transmitting information on the falsification determination result to the electronic document issuing system. 
   
   
       14 . The method of  claim 13 , wherein the transmitting the information includes transmitting a report message for reporting that the electronic document is falsified to the electronic document issuing system when it is determined that the electronic document is falsified and transmitting a receipt verification message for representing that the electronic document is normally received to the electronic document issuing system when it is determined that the electronic document is not falsified. 
   
   
       15 . The method of  claim 13 ,
 wherein in the displaying the falsification determination result, a report button for reporting that the electronic document is falsified based on a request of a checker is provided, and   wherein in the transmitting the information on the falsification determination result, when the report button is pressed by the checker, the report message is transmitted to the electronic document issuing system.   
   
   
       16 . The method of  claim 13 , wherein the determining whether the electronic document is falsified includes checking whether there is any unmatched item by comparing the second and first electronic document data. 
   
   
       17 . A system for providing an electronic document service, the system comprising:
 an electronic document issuing system issuing the electronic document by inserting an encrypted barcode including contents of an electronic document into a predetermined position in the electronic document, when a user requests the electronic document; and   an electronic document verification system capable of verifying whether the electronic document is falsified by acquiring an image of the issued electronic document, acquiring first electronic document data by detecting the barcode inserted into the predetermined position in the electronic document from the acquired image of the electronic document and decrypting the detected bar code, generating second electronic document data by converting the acquired image of the electronic document into data that can be compared with the first electronic document data, and comparing the first electronic document data with the second electronic document data.   
   
   
       18 . The system of  claim 17 , wherein the electronic document verification system displays a result obtained by comparing the first and second electronic document data. 
   
   
       19 . The system of  claim 17 , wherein the electronic document verification system transmits information on the falsification verification result of the electronic document to the electronic document issuing system. 
   
   
       20 . The system of  claim 19 , wherein the electronic document verification system transmits the information on the falsification verification result to the electronic document issuing system as a report message or receipt verification message and stores and manages the transmitted report message or transmitted receipt verification message by distinguishing the report message from the receipt verification message.